Hi @ziashahid104 and welcome to the Cayenne Community.
I edited out the part in the first post of this thread calling about the ID entry in /etc/myDevices/AppSettings.ini, as this ID referred to an older system that we used to use that is now deprecated. It is in fact OK that your AppSettings.ini file has a blank ID= line.
Could you share with me the output from telnet cloud.mydevices.com 8181 as well as service myDevices status and service webiopi status, so I can give you the next best troubleshooting steps?